摘要:Carbon forms: paths and processes in the Earth is a thematic set ofsix papers arising from the lectures presented at the Lake ComoSchool, held at Villa del Grumello, Como, Italy (15–20 October2017), and organized by the Graduate School of Milano Bicocca.This collection of lecture notes focusses on the structure of carbonallotropes, the geodynamics of deep Earth’s carbon transport andfixation at mantle conditions, carbon degassing by ascendingmagmas, and the vast tectonic carbon degassing at the Earth’ssurface.